<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">
          当前城市
        </div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">
              {{ this.$store.state.city }}
            </div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">
          热门城市
        </div>
        <div class="button-list">
          <div
            class="button-wrapper"
            v-for="item of hot"
            :key="item.id"
            @click="handleCityClick(item.name)"
          >
            <div class="button">
              {{ item.name }}
            </div>
          </div>
        </div>
      </div>
      <div class="area" :ref="key" v-for="(item, key) of cities" :key="key">
        <div class="title border-topbottom">
          {{ key }}
        </div>
        <div class="item-list">
          <div
            class="item border-bottom"
            v-for="innerItem of item"
            :key="innerItem.id"
            @click="handleCityClick(innerItem.name)"
          >
            {{ innerItem.name }}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import Bscroll from 'better-scroll'
export default {
  name: 'CityList',
  methods: {
    handleCityClick(city) {
      this.$store.dispatch('changeCity', city)
      this.$router.push('/')
    }
  },
  mounted() {
    const options = {
      click: true,
      tap: true
    }
    this.scroll = new Bscroll(this.$refs.wrapper, options)
  },
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  watch: {
    letter() {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        console.log(element)
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>
<style lang="stylus" scoped>
@import '~style/varibles.styl'

.border-topbottom
  &:before
    border-color #ccc
  &:after
    border-color #ccc
.border-bottom
  &:before
    border-color #ccc

.list
  position absolute
  top 1.68rem
  left 0
  right 0
  bottom 0
  overflow hidden

  .title
    line-height .54rem
    background #eee
    padding-left .2rem
    color #666
    font-size .26rem



  .button-list
    overflow hidden
    padding .1rem  .6rem .1rem .1rem

    .button-wrapper
      width 33%
      float left
      .button
        margin .1rem
        padding .1rem 0
        text-align center
        border .02rem solid #ccc
        border-radius .06rem
  .item-list
    .item
      line-height .76rem
      color #666
      padding-left .2rem
</style>
